Critique Thoroughbred mare

Yeah, she has crazy dapples in the summer.

Flexible muscle type. Nice shoulder with nicely set wither. The hind is not perfect with the sloping croup, slightly backward set stifle, and in teh photo an upright rear pastern (could just be photo). I question whether these may be compounding to possibly cause the roach. This considered may be best suited to dressage - but see how she's goes and good luck :)